It usually takes much higher doses than 500-1000 mg/wk of T to overwhelm most AIs. At the lower T dose I'd try 12.5 mg/day (or EOD) of exemestane but that's just me. Your system will be different. Get bloods within a week and adjust.
Make sure the stuff is legit tho... bunk AI really sucks.
Also decide what levels of E2 are ok for you. Some "feel fine" on 50 pg/ml or even WAY higher but my sense from all the research is that anything beyond 30 for men can be a health risk. However, nothing has been solidly established with studies (since it's really only AAS "abusers" who deal with these issues) so we gotta go with some limited clues.